Zosteriform Lentiginous Nevus

From the Research Foundation at Saint Joseph Hospital, Burbank, Calif (Dr. Matsudo); School of Medicine, University of California, Irvine (Drs. Reed and Bartok); and the School of Medicine, University of Southern California, Los Angeles (Dr. Horowitz).

A new pigmentary disorder, which is characterized by the presence of a large, seemingly related band of hyperpigmentation together with multiple theques of type-B nevus (Mishima) cells, is described in a 16-year-old boy, a 13-year-old girl, and a 12-year-old girl. The lesion, which had not been present since infancy, must be considered a probably new, undescribed entity that has been noted but not reported at various dermatological meetings. It is distinct from the giant, hairy, pigmented nevus, nevus spilus, Becker nevus, and the more involved systemic disorders that are genetic.